diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 8617b72..36b9d67 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -79,9 +79,9 @@ jobs:
         # FIXME: to work around bugs in latest cross release, install master.
         # See: https://github.com/rust-embedded/cross/issues/357
         cargo install --git https://github.com/rust-embedded/cross
-        echo "::set-env name=CARGO::cross"
-        echo "::set-env name=TARGET_FLAGS::--target ${{ matrix.target }}"
-        echo "::set-env name=TARGET_DIR::./target/${{ matrix.target }}"
+        echo "CARGO=cross" >> $GITHUB_ENV
+        echo ":TARGET_FLAGS=--target ${{ matrix.target }}">> $GITHUB_ENV
+        echo "TARGET_DIR=./target/${{ matrix.target }}" >> $GITHUB_ENV
 
     - name: Show command used for Cargo
       run: |
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index dbb358b..742f4fe 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -36,7 +36,7 @@ jobs:
           # Apparently, this is the right way to get a tag name. Really?
           #
           # See: https://github.community/t5/GitHub-Actions/How-to-get-just-the-tag-name/m-p/32167/highlight/true#M1027
-          echo "::set-env name=RG_VERSION::${GITHUB_REF#refs/tags/}"
+          echo "RG_VERSION=${GITHUB_REF#refs/tags/}" >> $GITHUB_ENV
           echo "version is: ${{ env.RG_VERSION }}"
 
       - name: Create GitHub release
@@ -129,9 +129,9 @@ jobs:
         # FIXME: to work around bugs in latest cross release, install master.
         # See: https://github.com/rust-embedded/cross/issues/357
         cargo install --git https://github.com/rust-embedded/cross
-        echo "::set-env name=CARGO::cross"
-        echo "::set-env name=TARGET_FLAGS::--target ${{ matrix.target }}"
-        echo "::set-env name=TARGET_DIR::./target/${{ matrix.target }}"
+        echo "CARGO=cross" >> $GITHUB_ENV
+        echo ":TARGET_FLAGS=--target ${{ matrix.target }}">> $GITHUB_ENV
+        echo "TARGET_DIR=./target/${{ matrix.target }}" >> $GITHUB_ENV
 
     - name: Show command used for Cargo
       run: |
@@ -149,10 +149,10 @@ jobs:
       shell: bash
       run: |
         release_upload_url="$(cat artifacts/release-upload-url)"
-        echo "::set-env name=RELEASE_UPLOAD_URL::$release_upload_url"
+        echo "RELEASE_UPLOAD_URL=$release_upload_url" >> $GITHUB_ENV
         echo "release upload url: $RELEASE_UPLOAD_URL"
         release_version="$(cat artifacts/release-version)"
-        echo "::set-env name=RELEASE_VERSION::$release_version"
+        echo "RELEASE_VERSION=$release_version" >> $GITHUB_ENV
         echo "release version: $RELEASE_VERSION"
 
     - name: Build release binary
@@ -186,12 +186,12 @@ jobs:
           cp "target/${{ matrix.target }}/release/rga.exe" "$staging/"
           cp "target/${{ matrix.target }}/release/rga-preproc.exe" "$staging/"
           7z a "$staging.zip" "$staging"
-          echo "::set-env name=ASSET::$staging.zip"
+          echo "ASSET=$staging.zip" >> $GITHUB_ENV
         else
           cp "target/${{ matrix.target }}/release/rga" "$staging/"
           cp "target/${{ matrix.target }}/release/rga-preproc" "$staging/"
           tar czf "$staging.tar.gz" "$staging"
-          echo "::set-env name=ASSET::$staging.tar.gz"
+          echo "ASSET=$staging.tar.gz" >> $GITHUB_ENV
         fi
 
     - name: Upload release archive